Portable drilling-rig.



C. D. RANDALL; PORTABLE DRILLING RIG. APPLICATION FILED MAY22.1913,

Patented May 4, 1915.

4 SHEETS-SHEET l.

I'HE MORRIS PETERS CO., PHOTo-LITHDA. WASHINGTON, D. C.

C. D. RANDALL. PORTABLE DRILLING RIG. APPLICATION FILED IIIAY 22. 1913.`

Patented May 4., 1915.

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C. D. RANDALL.

PORTABLE DRILLING RIG. APPLICATION FILED IIIAY 22. IsIa.

1,1 38,506. Patented May 4, 1915.

4 SHEETS-SHEET 3.

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C. D. RANDALL.

PORTABLE DRILLING RIG. APPLICATION HLED MAY22,1913.

1,138,506. Patented May 4, 1915.

4 SHEETS-SHEET 4.

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THE MORRIS PETERS Co.. PHOm-LlTHG.. WASHINGTON. D. C.

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CALVIN D. RANDALL, OF REWARD, CALIFORNIA.

:PORTABLE DRILLING-RIG.

Specification of Letters Patent.

Patented May 4g, 1915.

Application sied may 22, 1913. serial No. 769,279.

To all whom t may concern.' Y

Bc it known that I, CALVIN D. RANDALL, a citizen of the United States, and residing at Reward, in the county of Kern and State of California, have invented a new and'useful Improvement in Portable Drilling-Rigs, of which the following is a specification.

This invention relatesV to portable well drilling rigs, and the principal object is to provide a Wheeled structure on which are supported all of the essential and component elements to properly bore a well.

It is also an object to provide a portable Vwell drilling rig with a sectional mast partly supported upon the wheeled frame, and forming therewith a complete well drilling rig.

lt is also an object to provide a portable well drillingr rig in which the bull wheels are mounted on either side of the main shaft bearing the band wheel.

lt is also a further object to provide novel means for driving the bull wheels from the said driving wheel together with' means to shift the power to the various drum wheels, and means to shift the pitmen of the walking beam and the spudding mechanism.

ln the drawings accompanying this specification-Figure 1 is a side elevation of the portable well drilling rig, with portions broken away. Fig. .2 is a plan view of the same, the mast being broken away to clearly show the relation'of the various shafts and their drums. Fig. 3 is a front end view of the rig. Fig. el is a. rear end view of the rig. Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is a detail view of the clutch to throw the bull wheel driving pulleys into and out of engagement. Fig. 7 is a detail inside elevation of the clutch and its shifting lever, as seen on the line 7-7 of Fig. 6 in the direction indicated by the arrows. Fig. 8 is a detail elevation of the head of the mast, showing the sheaves mounted thereon. Fig. 9, Sheet 3, is a front view of the same detail.

More specifically in the drawings, 10 designates the side beams forming a portion of the frame work together with a plurality of cross beams 11, on which are mounted the axles 12 provided with the wheels 14; these wheels being of any suitable type, but shown of a small diameter so that the frame is comparatively close to the ground, and it is not necessary kto dig pits to bury the wheels. l

Mounted transversely of the frame is the crank shaft 15 revolubly supported in suitable bearings 16 to properly support the shaft, there being added a plurality of longitudinal timbers 1 7, on which are mounted the inner bearings 18 of the crank shaft 15 more particularly shown in Fig. 5. Preferably disposed centrally of the shaft is the crank 19, to which the spudding pitman :21 is secured, the outer end of the shaft eX- tending by the side frames 10 having keyed thereto crank arms 22. These crank arms are preferably provided with a plurality of bores to which the walking beam pitmen 23 are adapted to be adjustably connected on the outer faces by means of the wrist pins 24.

A pair-of band wheels 2.5 are keyed on the drivevshaft 15, over which are carried the bands or belts 26, which are `carried to the pulleys 9.7 of the engine 28; this engine being of any preferred type, and shown as an upright single acting steam engine, although an internal combustion engine may be found more economical.v

The engine is preferably mounted toward the forward end of the frame and secured to the longitudinal bars 17 by any suitable means. Adjoining the engine are preferably pivoted or journaled a plurality of control shafts bearing the control levers adapted to be operated by the operator whose station is adjacent the forward end of the frame. On the ground at the forward end of the wheeled frame are .preferably supported the approximately vertical legs 29 of the mast, these legs being spaced apart on the sill 30, which is preferably of greater width than the wheeled frame, and is so placed that the mast braces 31 may be secured to the longitudinal timbers 17 of the frame. llfhe mast and the braces are preferably formed of spliced sections which may be readily taken down and transported in another vehicle, the parts being ordinarily of such great length as not to be readily carried upon the main frame.

Intermediate of the crank shaft 15 and its driving mechanism, and occupying a position approximately midway between the center line of the well to be driven and the crank shaft, are the walking beam posts 32 which are preferably supported and vertically set upon the side beams l0, suitable braces 33 being carried from the upper portions of the walking beam posts rearwardly to the frame adjacent the crank shaft. The

upper end of each one of the walking beam posts are provided with suitable journals 34 in which the walking beam shaft 35 is journaled, the walking beam being preferably formed of a plurality of longitudinal bars 36 joined at their forward ends'by means of a block 37 and the bolts 38, and spaced apart at their rearwardly disposed ends a distance so that the pitmen 23 pivotally connected by suitable means to these ends, fall in a vertical position to their engagement with the crank arms 22. Suitable straps secure the bars 36 to the shaft 35, the connection between the pitmen and the free ends of the bars being of the common looped type of strap with an adjuster board. The lower ends of the pitmen 23, as previously stated, are removably secured to the adjustable 'wrist pins 24.

The spudding pitman 21 is secured to the crank arm 19, and is pivotally connected below its upper end to the divergent spudding bars 40 by means of a bolt 41', the upper end of the pitman 21 being provided with a snatch block yoke 42 in which is mounted the spud wheel sheave 43. rlfhe rearwardly disposed ends of each ofthe spudding bars 40 are secured to the crossarm 44, whichr is provided with trunnions 45, mounted in suitable journals in the vertical supports 46,

on which is mounted the spudding drum 47. n

The shaft for this drum is designated 4S, and has keyed thereto the bull wheels 49, preferably placed withinthe posts, and eX- teriorly of the posts are keyed the band brake wheels 50, a suitable band brake strap 51 being carried thereon. Also supported on the main frame between a pair of upright posts 52, is a spudv rope sheave 53 mounted on the shaft 54, suitably vsupported in the upper ends of the posts, each one of these vertical posts being properly braced by suitable inclined braces.

To operate the spudding drum 47, chains or bull ropes 55 are carried over the bull wheels and around sheaves 56 freely mounted on the crank shaft l'adjacent the side frames 10. Similar sheaves 57 are also freely mounted upon the shaft 15 adjacent the sheaves 56, and preferably placed'ad jacent the band. Wheels 25 Aand clutches' 5S are interposed between the two sets of sheaves 56 and 57 and keyed to the shaft by means of the feathers 59; Suitable collars are provided and secured to the shaft 15 to limit the lateral movement of tlie'tfsheaves 56 and 57, suitable recesses being cut in the faces of the sheaves adjacent the clutch, which is of the simple serrated type having the annular' groove 60, in which are engaged the pins 61 mounted upon a yoke 62, the yoke being provided with an operating arm pivoted by means of the bolt 63; the outer end of the arm 64 being engaged by connecting rod 65, pivotally secured thereto. A

pair of these clutches are preferably used and the connecting rods from each of the operating arms are connected to the oppositely disposed ends of crank arm 66, which is mounted upon the shaft 67 longitudinally disposed4 of the frame. rThe forward end of the shaft being pivotally mounted in the bearing 68 and provided with an operating arm 69, a suitable journal 70 supporting the inner end adjacent the crank arm 66.

rEhe sheaves 57 are adapted to carry bull ropes 71 carried to and around bull wheels 72 on the casing line drum 73. The shaft 74 for this drum being carried through suitablebearings in the side frames, the outer ends having keyed thereto band brake wheels 75. Suitable straps 76 are connected thereto to act as band brakes, the lfree ends being pivotally mounted on the crank arms 77; which are operated by means of the rods 78 connected to the pivoted lever 79 mounted adjacent the forward end of the frame near the lever 89. The band brakes 51 previously mentioned as affording braking means to the spudding cable drum 47 are similarly connected to crankarms 8O and connected by the rods 81 to the pivoted lever 82, this lever also being mounted on a transverseV shaft adjacent the other operating levers.

A sand line drum 83 is also provided, having suitablebearings in a pivoted frame S4, a pair of these frames being provided, which are pivoted to the side frames 10 in suitable journals by means of the trunnions 86, the frame'being eitended so as to give sufficient leverage, yand the lower ends thereof connected by means of the yoke 87 to the rods S8, these rods being carried to crank arms 89 on the shaft 90 operated by means of the lever 91." r1`he reversal of the lever 91 throws the friction wheels 92 in contact with the brake shoes 104 which are shown as uprights secured to the longitudinal bars 17.

' The flanges of the drum S3 are preferably provided with friction wheels'92 which are adapted to engage with the band wheels 25 byswinging the frame 84 so that the sand drum may be revolved to wind up the line as desired.

The upper end of the mast is preferably formed as shown in Figs. S and 9 with the twoinclined legs 29 separated by means of a`block93, the inner face being preferably cut to form al parallel slot, within which are mounted the sand wheel sheave 94 and the cable wheel 95, the latter being preferably of greater diameter so as to carry the cable 96 in a position to clear the sand wheel line 97 suitable short shafts being carried through the uprights to form bearings for the sheaves.

The block 93 preferably forms a seat for the mast braces 31, at their junction. The arms 98 are preferably secured one on each side in which are mounted a plurality of sheaves, over which and through the slots in the arms are carried portions of the casing tackle line 99, the free end of that oppositely disposed from the portion secured to the drum 7 3 being secured to the three sheave block, not shown.

In the operation of the device for spudding, it being assumed that the engine has been disconnected or stopped, the pitmen 23 are removed from the crank arms and permitted to rest with their lower ends on some portion of the frame or the ground, so that the'walking beam clears the spudding cable, this cable being carried as shown from the drum 47 up over the sheave 53 and under the snatch block sheave 43 up over the sheave 95 and to the ground where the required tool is secured. The lever 69 is now operated to throw the clutch into intermediate position leaving sheaves free, and the tool is allowed to run down controlled by the brake 5l operated by the lever 82, until the required position is obtained. The engine is now started` and the pitman 2l is reciprocated lifting the wheel 43 up and down and providing the necessary lifts and drops for the efficient operation of the drill. When it is desired to rewind the cable, the clutches 60 are shifted to throw the sheaves 56 into gear, and if desired the pitman 2l may also be disconnected from the crank arm, and by releasing the brakes 5l the cable can be rewound upon the drum v47. To handle the sand pump, the clutches 60 are shifted to their intermediate position checking the winding of the cable; and the shaft is operated by means of the handle 91 to swing the drum 83 into engagement, so that the latter will wind up the sand line`9 When it is necessary to handle casing or other tools requiring the use of the tackle, they clutches are thrown to engage the sheaves 57, and the line may be wound upon the drum 7 3 to the proper position. The return or unwinding is controlled by the brake 76 and the release of the clutches.

l/Vhen the drilling is heavier or it is desired for other reasons to use the walking beam, the cable 96 can be clamped within a temper screw and the T seated in the usual manner in the slot formed in the block 37. The pitmen 23 of the walking beam are then secured to the desired points on the crank arms 22 to get the length of stroke required in the operation. It will thus be seen that all of the opera-tions for handling drilling and the necessary apparatus, are self-contained within the compassy of the wheeled frame forming an eflicient portable rig of wide utility.

That I claim is:

l. In a portable well drilling rig, the combination of a wheeled frame, a motor mounted on said frame, a crank shaft having a pair of correspondingly extending crank arms and a single oppositely extending crank arm, means for rotating said crank shaft from the motor, a walking beam supported on the wheeled frame having divergent side members, a pair of pitman rods connected to the side members of the walking beam and adjustably connected to the pair of crank arms on the crank shaft and spudding "mechanism connected to the other crank arm of the crank shaft.

2. In a portable well drilling rig, the combination of a wheeled frame, a motor on said frame, a crank shaft having a pair of correspondingly extending crank arms and a single oppositely extending crank thereon, a walking beam, a pair of pitmen adjustably and detachably connected to the pair of crank arms and connected tothe walking beam, a pitman connected to the other crank arm, a spudding beam connected to said last named pitman, a pair of band wheels keyed on the crank shaft, belts passing over the band wheels adapted to be driven by the motor whereby the crank shaft is rotated.

3. In a portable well drilling rig, the combination of a wheeled frame, a motor on said frame, a crank shaft having a pair of correspondingly extending crank arms and a single oppositely extending crank thereon, a walking beam, a pair of pitmen adjustably and detachably connected to the pair of crank arms and connected to the walking beam, a pitman connected to the other crank arm, a spudding beam connected to said last named pitman, a pair of band wheels keyed on the crank shaft, belts passing over the band wheels adapted to be driven by the motor whereby the crank shaft is rotated, a casing line drum, a spudding drum and means for successively throwing the said drums in and out of operative connection with the crank shaft.

4. In a portable well drilling rig, the combination of a wheeled frame, a motor on said frame, a crank shaft having a pair of correspondingly extending crank arms and a single oppositely extending crank arm thereon, a walking beam, a pair of pitmen adjustably and detachably connected to the pair of crank arms and connected to the walking beam, a pitman connected to the other crank arm, a spudding beam connected to said last named pitman, a pair of band wheels keyed on the crank shaft, belts passing over the band wheels adapted to be driven by the motor whereby the crank shaft is rotated, a casing line drum, a spudding drum and means for successively throwing the said drums in and out of operative connection with the crank shaft, comprising two pairs of sheaves revolubly mounted on the crank shaft, bull wheels connecting with each of the drums, ropes passing around the bull wheels on the casing line drum and CID around. one of the sheaves in each pair of sheaves, ropes passing around the bull Wheelson the spudding drum and around the other sheave and a pair of clutch members keyed on the crank shaft arranged between the sheaves of each pair and adapted to be moved in and out of engagement with either sheave on each side thereof to drive either of the drums.

5. A portable Well drilling rig, comprising a Wheeled frame, a motor mounted on said frame, a crank shaft mounted in operative relation to said motor, connecting means to drive said crank shaft, a plurality of parallel crank arms on said crank shaft, a plurality of pitmen adapted to be connected thereto, means to adjust said pitmen to said crank arms, a Walking beam operatively mounted on said frame and connected to said vadjustable pitmen, a Winding drum mounted adjacent said Walking beam, a spudding beam mounted on said frame, a Winding drum mounted adjacent said Vspudding beam, cables connected to eachof said beams and their cooperative Winding drums, and operating means connecting said spudding beam to said crank shaft. y

6. A portable Well drilling rig, comprising a wheeled frame, a motor mounted on said frame, a crank shaft mounted in operative relation to said motor, connecting means to drive said crank shaft, a plurality of correspondingly extending crank arms on said crank shaft, a pluralityof pitmen adapted to be connected thereto, means to adjust said pitmen to said crank arms, a Walking beam operatively mounted on said frame and connected to said adjustable pitmen, a Winding drum mounted adjacent said Walking beam, a spudding beam mounted on said frame, a Winding drum mounted adjacent said spudding beam, cables connected to each of said beams and their coperative Winding drums, operating means connecting said spudding beam to said crank shaft, and operating means to alternately engage said Winding drums with said motor.

7. Ar portable Well drilling rig, comprising a Wheeled frame, a motor mounted yon said frame, `a crankshaft mounted in operative relation to said motor, connecting means to drive said crank shaft, a plurality of correspondingly extending crank arms on said crank shaft, a plurality of pitmen adapted to be connected thereto, means to adjust said pitinen to said crank arms, a Walking beam operatively mounted on said frame and connected to said adjustable pitmen, a Winding drum mounted adjacent said walking beam, a spudding beam mounted on said frame, a Winding drum mounted adjacent said spudding beam, cables connected to each of said beams and their cooperative Winding drums, operating means connecting said spudding beam to said crank shaft, and a pivotally mounted sand line Winding drum, adapted to be thrown in and out of engagement with said driving means.

In Witness that l claim the `foregoing I Ahave hereunto subscribed my name this 18th day of May, 1913.

CALVIN D. RANDALL.

Witnesses:

IInni WELCH,

MARIE BATTEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. CJ` y 

